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15 Questions About Bacteria by Andrew S.
Transcript of 15 Questions About Bacteria by Andrew S.
1. What do bacteria look like? What are the 3 shapes of bacteria?
Rod- or stick-shaped bacteria are called Bacilli.
2. What are the traits of a procaryotic cell? What are their 4 major cell parts?
procaryotic cells have no membrane-bound organelles
reproduces by binary fission
they are single-celled organisms
most are smaller than eukaryotic cells
3. What are the traits of the 2 kingdoms of bacteria?
The two kingdoms of bacteria go by the terms of eubacteria and archaebacteria.
Eubacteria are single-celled and very microscopic. Some can create their own food through photosynthesis. But some rely on sources of nutrition. Eubacteria are also called true bacteria.
Archaebacteria have peptidoglycan in their cell walls. They have membrane lipids of fatty acids. They participate in the process of photosynthesis and metabolism.
Little ball-shaped bacteria are called Cocci.
Helical- or spiral-shaped go by the term Borrelia.
4. Where do bacteria live?
Bacteria are found everywhere!!! In nature, they are found in soil, air, animals, and plants. On your body, bacteria is found on your skin, your mouth, and in your gut.
5. How do bacteria breathe, move, and reproduce?
Bacteria do not have lungs, unlike humans, to breathe. They have many other ways to breathe. They use oxygen to burn energy and respire aerobically. Nitrates, sulfates, and carbon dioxide help the bacteria respire anaerobically.
Bacteria reproduce by binary fission. A bacteria reproduces asexually, grows twice its size, and then splits in to two daughter bacteria with the same genetic code.
Bacteria move with a flagella. A motor sticking off of the end of the bacteria. They also move with pili. Pili are stick-like things that protrude out of the bacteria's body.
Bacteria with flagella and pili
6. How many bacteria are on earth?
Ummm.... Is this supposed to be a trick question?
But, on August 25, 1998, William B. Whitman made an estimate on how many bacteria there was on earth. His estimate: 5 million trillion trillion, or 5,000,000,000,000,000,000,000,000,000,000,000,000.
7. How quickly do bacteria reproduce?
Bacteria can reproduce at tremendous speeds! It can reproduce once every 20 minutes. Bacteria doubles itself.
So, at 0 minutes there will be 2 bacteria.
At 1 hour, there will be 16 bacteria.
At 2 hours there will be 128 bacteria.
At 3 hours, there will be 1024 bacteria.
So at 4 hours, there will be.....
So, at 20 minutes there will be 4 bacteria.
So, at 40 minutes there will be 8 bacteria.
At 1 hour 20 minutes, there will be 32 bacteria.
At 1 hour 40 minutes, there will be 64 bacteria.
At 2 hours 20 minutes there will be 256 bacteria.
At 2 hours 40 minutes there will be 512 bacteria.
At 3 hours 20 minutes, there will be 2048 bacteria.
At 3 hours 40 minutes, there will be 4096 bacteria.
8. Two bacteria were left on kitchen counter after Sunday dinner. Using the answer to number 7, how many bacteria do you have at the end of 4 hours?
9. What do bacteria eat and how do they take in food?
Some bacteria are photosynthetic. They absorb the material they live on or in. Bacteria process proteins called enzymes. Enzymes speed up the process of synthesis.
10. Name some helpful bacteria.
Helpful bacteria are called probiotics.
Ya, yogurt contains a lot of lactobacillus acidophilus.
Helps with the process of digestion and diarrhea.
11. List 4 ways bacteria is helpful to humans.
bacteria gives you dairy products
bacteria helps fight disease in your body
bacteria helps manufacture antibiotics
bacteria helps digest food and solve problems with diarrhea
12. How do bacteria keep the ecosystem healthy?
can absorb the oil from an accidental oil spill
eat the pollution
sulfur-eating bacterias reduce acid run-offs
bacteria as a natural oil absorber
bacteria can generate electricity with help from natural waste
13. What are pathogenic bacteria?
Pathogenic bacteria is bacteria that is eligible to cause disease. It can have an impact on humans, plants, and animals. An example of pathogenic bacteria is tuberculosis. Pathogenic bacteria can be the start of spreading illnesses and disease epidemics.
14. Where do pathogenic bacteria live?
Pathogenic bacteria are mostly in food-poisoning products. They are usually located in raw or under-cooked meats, egg-sh, shellfish, rice, and dairy products.
Find pathogenic bacteria under there!
15. How are bacteria spread, or how are diseases prevented?
Bacteria can be spread by getting in contact with people who have a type of sickness, touching food with dirty hands, people who cough and sneeze and spread germs.
Disease can be prevented when we wash hands, we should cook our food as quickly as possible and consume the food as quickly as possible.
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ALL WEBSITES WERE ACCESSED ON 12/16/13 ALL IMAGES WERE ACCESSED ON 12/18/13